Decreased and weaker fetal movement at 33 weeks may be associated with poor maternal rest, presence of placenta, umbilical cord abnormalities, etc. Prompt treatment and symptomatic management are recommended. 1. Poor rest: with the increase of pregnancy weeks, the quality of maternal sleep will gradually decline, if the fetus does not have enough nutritional intake, there will be a decrease or weakening of fetal movement. At this time, it is recommended that pregnant women ensure good rest and nutritional status, and pay close attention to the fetal heart and fetal movement changes. If you feel that the fetal movement is obviously reduced or weakened, it is recommended to consult a doctor in time. 2. Placenta problem: With the increase of pregnancy weeks, poor circulation of the placenta may occur, affecting the normal blood supply to the fetus, resulting in fetal hypoxia, manifested by decreased fetal movement, and cannot be effectively improved after maternal rest or activities, it is recommended to go to the hospital for fetal heart monitoring to clarify the intrauterine condition of the fetus, so as to deal with it in a timely manner. 3. Umbilical cord problem: with the increase of pregnancy weeks, there may be umbilical cord around the neck, umbilical cord torsion, umbilical cord knots and other conditions, affecting the blood supply of the fetus, resulting in decreased fetal movement and become weaker. If the pregnant woman obviously feels that the fetal activity decreases, she needs to pay attention to it, consult a doctor in time for examination, and handle it under the doctor’s guidance, so as not to cause intrauterine hypoxia of the fetus. Therefore, if a pregnant woman in her 33rd week of pregnancy feels that her fetus has reduced or weakened fetal movement, she needs to pay attention to it, first of all, she should consider whether she has poor rest and other problems, and under the premise of ensuring sufficient sleep and nutritional supply, if it still exists, it is recommended that she consult a doctor in a timely manner, so as to rule out the possibility of abnormalities of the placenta and the umbilical cord.